Heating system.



No. 838,641. PATENTED DEC. 18, 1906. A. G. PAUL.

HEATING SYSTEM,

APPLICATION FILED MAY 15, 1900. nnmzwnn MAY 22. 1906.

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WITNESSES: INVENTOR I ATTORN J 1: NuRms FEVER: ca, wAsumc-rou, 0. c4

PATENTED DEC. 18. 1906.

A. G. PAUL.

HEATING SYSTEM.

APPLIOATION FILED MA: 15, 1900. RENEWED MAY 22. 1906.

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INVENTOR W9. f!

WITNESSES BY Wm? YO.

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PATENTED DEC. 18, 1906.

A; G. PAUL.

HEATING SYSTEM. APPLiOATION FILED MAY15 1900- RENBWBD MAY 22. 1906 3sums-SHEET s.

INVENTOR 7n: NORRIS PETERS ca, WASHINGTON. 04 ci No. 838,641.

UNITED STATES PATENT OFFICE.

ANDREW G. PAUL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO PAKIN COMPANY,CORPORATION OF NEW YORK.

HEATING SYSTEM.

Specification of Letters Patent.

Patented Dec. 18, 1906.

To a l] whom it may concern:

Be it known that 1, ANDREW G. PAUL, a citizen of the United States,residing in Boston, in the county of Suffolk and State of Massachusetts,have invented a new and usei'ul Improvement in Heating Systems, of whichthe following is a full, clear, and exact specification, reference beinghad to the accompanying drawings, which form a part hereof.

This invention relates to a heating system wherein steam or othersuitable heating agent is circulated for the purpose of conveying andimparting heat to the places desired; and it consists in an improvedconstruction and arrangement of the parts of such a system.

The object of my invention is to control the discharge of the air andthe water of condensation from the radiator and in addition to this toprevent the loss or waste of the heating vehicle through thedischarge-pipe.

My invention consists in the combination, with a heating system, of asupply-pipe, a discharge-pipe, a valve in the discharge-pipe, a motorcontrolling said Valve, a fiuid-pressure chamber on one side of saidmotor, a vent for said chamber, a fluid-pressure device, a pipeconnecting the fluid-pressure device and the fluid-pressure chamber, anda thermostat adapted to be operated by the temperature in thedischarge-pipe and to control the pipe connecting the fluid-pressuredevice with the fluid-pressure chamber.

hen my complete invention is employed, I combine with the above parts asecond thermostat adapted to be placed in the room or apartment to beheated and to control the said connecting-pipe between thefluid-pressure device and the fluid-pressure chamber.

My invention also consists in certain other features of construction andcombinations of parts hereinafter described and claimed.

My invention is fully illustrated in the ac' companying drawings, inwhich Figure 1 shows a system embodying my invention and containing tworadiators. Fig.

2 shows a system in which a second thermostat is used to control theconnecting-pipe. Fig. 3 is a sectional view showing the thermostat inthe discharge-pipe. Fig. 4 shows another modification of my improvement.Fig. 5 is a sectional new of the dlschargevalve shown in Fig. 4.

discharge-pipe.

Similar numbers denote similar parts in the different figures.

Referring to Fig. 1, 1 is a radiator of any suitable form. 2 is asupply-pipe provided with suitable supply-valves 3 3. 4 is the 5 is thedischarge-valve. This valve is made of any ordinary construction. 6 is athermostatic valve placed in the discharge-pipe beyond thedischarge-valve. The form of this thermostatic valve is shown in sectionin Fig. 8. It consists of the expanding member 7, extending across thedischarge-pipe 4. This expanding member is provided with a head orsupport 8, adapted to screw into an opening 9 in one side of thedischarge-pipe or in one side of a fitting 10 provided for this purpose.The other end of i the expanding member is adapted to expand into arecess or opening 11, and thereby to close thatopening. 12 is a capcovering the opening through which the expanding member is inserted inthe fitting 10. By removing the cap 12 and turning the head 8 in onedirection or the other the position of the expanding member 7 can beproperly adjusted. 13 is a diaphragm-motor mounted in any suitablecasing or support 14 and connected, by means of the arm 15, with thelever 16, which is l'ulcrumed at 17 and connected at its outer end bymeans of the rod 18 with the discharge-valve 5. 19 is a screw adapted toscrew into a support 20 and carrying at its lower end any sultableformof loop inclosing the lever 16, so that by turning the screw 19 up ordown the valve 5 can be opened or closed positivelyby hand. When thescrew 19 is in its middle position, the lever 16 is left free to bemoved by the diaphragm 13. 21 is a fluid-pressure chamber underneath thediaphragm 13, provided with a suitable. vent 22 and connected, by meansof the pipe 23, with the fitting 10, in which the thermostat 7 isplaced. The pipe 23 connects with the recess or opening 11, so that whenthe expanding member 7 is expanded and closes the opening 11 the pipe 23is shut ofi from the discharge-pipe. 24 is any ordinary hand valve forshutting oii the pipe 23. air branch extending from the radiator to thedischarge-pipe, as shown, and-provided with any suitable automatic airvalve 26.- 27 is an exhauster connected with the dischargepipe. 28 is anordinary valve to cut off the exhauster. 29 is a check-valve. 30is atank 25is an or reservoir for the water of condensation. 3 1 is arelief-pipe provided with any suitable form of valve 32. 33 is a pipethrough which the water of condensation can be pumped to the boiler orany other suitable place. 34 is a cock for drawing off the water ofcondensation.

The operationof this form of my invention is as follows: When the systemis started, the contents of the discharge-pipe 4 being cold thethermostatic valves 6 are open. The valve '24 being open, the exhauster27 reduces the pressure in the fluid-pressure chambers 21 and causes thediaphragms 13 to move down, thereby opening the discharge-valves 5. Theexhauster draws out the air and the water of condensation from theradiators until the temperature in the discharge-pipe at thethermostatic valves 6 is raised sufliciently to expand the expandingmember 7 and shut off the connection between the pipes 23 and thedischarge-pipe. The pressures on the two sides of the diaphragm 13 thenbecome equalized, and the discharge-valves 5 are closed. As soon as thethermostats 6 are cooled again the discharge-valves are opened, asalready explained, and this operation is repeated. The water ofcondensation flows down into the tank 30, and the air is removed throughthe exhauster 27. Thus the water of condensation and the air arepositively and thoroughly removed from the system. By closing the valve24 the discharge-valves 5 can be closed, if desired. Thedischarge-valves can also be closed or opened manually by means of thescrews 19.

In Fig. 2 the parts are the same as already described except that theconnecting-pipe 23 is provided with a solenoid-valve 35, which isoperated by means of a thermostat 36, adapted to be hung upon the wallor in any other suitable place. The thermostat 36 is connected with thevalve 35 by any suitable meanssuch, for example, as an electric circuit.

The operation of this form of my invention is the same as that alreadyexplained except that when the temperature of the room rises to thepredetermined or desired point the thermostat 36 operates to close thevalve 35, and thereby to close the discharge-valve 5. When thetemperature of the room or other place falls below this point, the valve35 is opened, and after this the system. operates in the manner alreadyexplained.

In Fig. 4 the parts are the same as already described, except that inplace of the diaphragm to control the discharge-valve I use adischarge-valve 37, similar in construction to the valve described andclaimed in my pending application, filed May 15, 1900, Serial No.16,809. This valve is shown in section in Fig. 5. It consists of acasing 38,

provided with a port 39, a valve 40 to close the said port, apiston-motor 41, operating the valve and made of such a size as toproduce an equalizing-passage 42 between this piston and the wall of thecasing. 43 is a fluidpressure chamber above the piston, with whichthepipe 23 is connected at one end. 44 is a coiled spring pressing down onthe top of the piston.

This system operates in the manner already explained. When the pipe 23is closed, the pressures on the two sides of the piston are equalizedthrough the equalizing-passage 42, and the valve 37 is closed.

Some of the advantages of my invention are as follows: The air and waterof condensation are positively removed through the discharge-pipe, andthis removal is controlled by the temperature in the discharge-pipebeyond the discharge-valve. So long as the water of condensation is coldor so long as air is passing through the pipe the dischargevalve remainsopen, but when the water of condensation passing through. the pipebeyond the discharge-valve is above the ternperature for which thethermostatic valve in the discharge-pipe is set the discharge-valve isclosed. Should the heating vehicle escape into the discharge-pipe, thedischarge-valve will be closed at once, thus preventing the loss of anysubstantial quantity of the heating vehicle. The discharge of air and,water is further controlled by the temperature of the apartment which isbeing heated.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination with a radiator of a supply-pipe, a discharge-pipe, avalve in the discharge-pipe, a motor controlling said valve, the saidvalve device being provided with a fluid-pressure chamber on one side ofsaid motor, and with a vent for said chamber, a fluid-pressure device, apipe connecting the fluid-pressure device and the chamber and athermostat adapted. to be operated by the temperature in thedischarge-pipe and. to control the pipe connecting the fluid-pressuredevice with the chamber, substantially as set forth.

2. The combination with. a radiator of a supply-pipe, a discharge-pipe,a valve in the discharge-pipe, a motor controlling said valve the saidvalve device being provided witha fluidpressure chamber on one side ofsaid motor, and with. a vent for said chamber, a fluid-pressure device,a pipe connecting the fluid-pressure device and the chamber and athermostat adapted to be operated by the temperature in thedischarge-pipe and to control the pipe connecting the fluid-pressuredevice with. the chamber, and a second thermostat adapted to be placedin the space to be heated and to control the said connectingpipe,substantially as set forth.

3. The combination with a radiator of a supply-pipe, a discharge-pipe, avalve in the ITO 4. The combination with a radiator of a supply-pipe, adischarge-pipe, a valve'in the discharge-pipe, a motor controlling said.valve, the said valve device being provided with a fluid-pressurechamber on one side of said motor, and with a vent for said chamber, apipe connecting the fluid-pressure chamber and the discharge-pipe, athermostat adapted to be operated by the temperature in thedischarge-pipe and to control the pipe connecting the fluid-pressurechamber with the discharge-pipe, a second thermostat adapted to beplaced in the space to be heated and to control the saidconnecting-pipe, and an exhauster connected with the discharge-pipe,substantially as set forth.

5. The combination with a radiator of the supply-pipe, a discharge-pipe,a valve in the discharge-pipe, a motor controlling said valve,

the said valve device being provided with a fluid-pressure chamber onone side of said motor, and with a vent for said chamber, apipeconnecting the fluid-pressure chamber with the discharge-pipe, andthe thermostat 6 placed in the discharge-pipe and provided with theexpanding member 7 adapted to eX- pand into the recesses 11 and therebyto close the pipe connecting the fluid-pressure chamber with thedischarge-pipe, and an eXhauster connected with the discharge-pipe,substantially as set forth.

6. The combination with a radiator, of a supply-pipe, a discharge-pipe,a valve in the discharge-pipe, a motor controlling said valve, the saidvalve device being provided with a fluid-pressure chamber on one side ofsaid motor, and with a vent for said chamber, a pipe connecting thefluid-pressure chamber with the discharge-pipe, a thermostat adapted tocontrol the pipe connecting the fluidpressure chamber with thedischargepipe, and an exhaust-er connected with the discharge-pipe,substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ANDREW G. PAUL.

Witnesses THOMAS K. PETER-S, NANNIE FIN-LEY.

